Animal reproduction is essential to the survival of a species; it can occur through either asexual or sexual means. Most importantly, reproduction is necessary for the survival of a species. The known methods of reproduction are broadly grouped into two main types: sexual and asexual. In asexual reproduction, an individual can reproduce without involvement with another individual of that species.
Asexual and sexual reproduction, two methods of reproduction among animals, produce offspring that are clones or genetically unique. Asexual reproduction produces offspring that are genetically identical to the parent because the offspring are all clones of the original parent. This type of reproduction occurs in prokaryotic microorganisms bacteria and in some eukaryotic single-celled and multi-celled organisms. Animals may reproduce asexually through fission, budding, fragmentation, or parthenogenesis. Fission, also called binary fission, occurs in prokaryotic microorganisms and in some invertebrate, multi-celled organisms. After a period of growth, an organism splits into two separate organisms.
Traits that influence reproductive success and contribute to reproductive isolation in animal and plant populations are a central focus of evolutionary biology. In the present study we used an experimental approach to demonstrate the occurrence of environmental effects on sexual and asexual reproduction, and provide evidence for sexual plasticity and inter-clonal fertilization in laboratory-cultured lines of the sea anemone Aiptasia diaphana. We showed that in A. The rate of pedal laceration was ten-fold higher under summer photoperiod and water temperature conditions than under winter conditions.
Published in , this book gave many young people their first taste of sex education. There are four survival instincts in the animal kingdom: feeding, fighting, fleeing and … reproducing. Read on for more about sex in the sea — and get ready to learn some new words to impress your friends. In asexual reproduction, a single organism produces offspring that are genetically identical to the parent.